Senior Software Engineer - Backend & APIs

HIMANSHU GAUTAM

Jaipur, India +91-701******* *********************@*****.*** LinkedIn

Summary

Senior Software Engineer with 6+ years of experience in backend (PHP/Laravel/Node.js) and frontend

(React.js) development. Skilled in building scalable APIs, microservices, and real-time applications with strong expertise in cloud platforms (AWS, Azure, GCP). Experienced in third-party API integrations (RESTful APIs, GraphQL, OAuth, Webhooks), handling auth flows, rate limits, retries, and schema drift across payment, e-commerce, and data platforms. Proven in system architecture, database design (MySQL, MongoDB, PostgreSQL), and performance optimization. Adept at mentoring teams, defining reusable integration patterns, leading projects, and delivering enterprise-grade, high-performance applications. Passionate about scalability, automation, and modern web technologies.

Technical Skills

• Languages & Frameworks: Laravel, Core PHP, CodeIgniter, Node.js, JavaScript, React.js, Redux

• API & Integration: REST API, GraphQL, OAuth 2.0, Webhooks, third-party API integration (auth flows, rate limiting, retries, schema drift)

• Frontend: React.js, Redux, JavaScript (ES6+), HTML5, CSS3

• Database: MySQL, PostgreSQL, MongoDB, Redis (Caching & Queues), Firebase

• Cloud & DevOps: AWS (EC2, S3, RDS, Route53, CloudFront), Azure, GCP, Laravel Vapor, CI/CD Pipelines, Docker, Kubernetes, NGINX

• Tools: Git, Bitbucket, GitHub, Jira, Trello, Swagger (OpenAPI), Supervisor

• Payment & Third-Party APIs: Stripe, RazorPay, WorldLine, Shopify API, Auth0, Firebase Cloud Messaging, Sportz Interactive API

PROFESSIONAL EXPERIENCE

Senior Software Engineer (Contract-Based) Jidhar X Nov 2025 – Dec 2025

• Developed scalable Node.js APIs for Werfie (Community Platform), handling posts, user interactions, reporting systems, and implemented content moderation workflows with RBAC-based access control.

• Built Laravel APIs for WNSocial (Social Backend Platform), managing user posts, community features, reporting systems, and content validation logic.

• Designed and implemented a dynamic pricing module with configurable rule-based logic and developed an analytics module to track user activity, engagement metrics, and platform insights.

• Ensured secure authentication and role-based access control across all modules, while improving API performance through query indexing and response optimization Senior Software Engineer RG Infotech Pvt. Ltd Jaipur Aug 2024 - Sep 2025

• Architected Tarim90 (B2B Agri-Commerce Platform) — engineered microservices-based backend for large-scale agricultural trade using Node.js, React, Redis, Firebase, Socket.io; designed reusable service patterns for connector-style data exchange between third-party agri-data providers.

• Led Vision11 Fantasy Sports Platform — integrated Sportz Interactive APIs with full auth flow implementation, rate-limit handling, and retry logic; executed real-time player stats, leaderboards, and contest management using Redis Queues and Laravel Services, scaling to 500K+ concurrent users.

• Delivered enterprise-grade RBAC (Role-Based Access Control) with KYC-based role switching and real-time notifications via webhooks.

• Enhanced system scalability, caching strategy, and performance optimization across APIs and dashboards; implemented observability patterns for API monitoring.

• Improved API response time by 40% via caching strategies (Redis) & query optimization. Senior Software Engineer, Crazibrain Solution Noida Mar 2024 - Jul 2024

• Built a multi-level Asset Management System with scalable hierarchy APIs for large organizations, improving asset retrieval speed by 70%; designed reusable API patterns applicable to connector bundle development.

• Optimized asset lifecycle tracking & reporting using Laravel, Redis Queues, and MySQL.

• Integrated Supervisor for queue workers, reducing background job failures by 90% and improving reliability of async integration pipelines.

Senior Software Engineer Dianapps Jaipur Feb 2022 - Jul 2024

• Drip Fitness: Built subscription integration layer using Shopify APIs + Azure — implemented OAuth flow, webhook event handling, and data sync for 10K+ active users; managed auth token refresh, rate limits, and error recovery patterns.

• Kooling (Carbon Footprint Tracker): Designed an IoT sensor data ingestion pipeline on AWS — processed real-time sensor feeds, normalized third-party schema, and applied reward logic; experience directly applicable to connector data transformation.

• Firehouse (Workforce Scheduling System): Enhanced real-time scheduling, overtime, and messaging modules for US fire departments; integrated Firebase Cloud Messaging for real-time webhook-style notifications.

• Newbe: Social media app for creating and sharing questions and responses. Developed scalable backend. Tech: PHP, Laravel, MySQL, React JS.

• ARES (Logistics App): Implemented driver task management and consignment tracking with Laravel + React + MySQL; built a RESTful API layer with structured error handling and observability. Full Stack Developer, Troyes IT Services Pvt Ltd Jan 2020 - Mar 2022

• Created and optimized diverse solutions: HR Management, Client Connect, Employee Management.

• Integrated payment gateways (Stripe, Paytm) with full OAuth flow, webhook validation, idempotency, and retry handling; integrated social logins (Auth0).

• HR & Employee Management Systems (Client Connect, Employee Management, Hall Booking): Delivered platforms for HR, payroll, attendance, invoice management, and project tracking. Features included salary automation, leave management, hall booking with vendor panels, and reporting dashboards.

PROJECT HIGHLIGHTS

• Tarim90: B2B Agri-commerce platform Tech: Node.js, React, MySQL, Redis, Firebase, Socket.io

• Vision11: Fantasy Sports platform — Sportz Interactive API integration, rate-limit handling, auth flows Tech: Laravel, Redis, MySQL, Sportz API, Queues

• Drip Fitness: Online fitness app — Shopify API connector, OAuth, webhook events Tech: Laravel, Azure, Shopify APIs

• Kooling: Carbon footprint tracker — IoT sensor data ingestion, schema normalization Tech: Laravel, MySQL, AWS

• Firehouse: Scheduling for fire departments — Firebase messaging, real-time APIs Tech: Laravel, MySQL, AWS, Firebase

• ARES: Logistics app for drivers — RESTful API, consignment tracking Tech: Laravel, React, MySQL

• Newbe: Social media Q&A app Tech: PHP, CodeIgniter, MySQL, React JS

• HR & Employee Management Systems (Client Connect, Employee Management, Hall Booking): Comprehensive solutions for HR, payroll, attendance, invoice management, project tracking, and event booking Tech: Laravel, CodeIgniter, MySQL, React.js EDUCATION

• MCA, Dr. A. P. J. Abdul Kalam Technical University, Lucknow, 2018

• BCA, Dr Bhimrao Ambedkar University, Agra, 2016

CERTIFICATIONS

• CCC Certificate - National Institute of Electronics & Information Technology

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